Antiskid device for vehicle-wheels.



c. P. SMITH.

ANTISKID DEVICE FOR VEHICLE WHEELS.

' APPLICATION FILED 0C1.28,19l5- 1,207,089. Patented Dec. 5,1916.

2 SHEETSSHEE T I.

c. P. SMITH. ANTISKID DEVICE FOR VEHICLE WHEELS.

' APPLICATION FILED OCT. 28, I915.

Patented Dec. 5,1916.

2 SHEETS-SHEET 2.

nnrrnn ANTISKID DEVICE FOR VII lCLE-VJHEELS Specification of LettersPatent.

iiz'rtentci: rice. 5, 1916.

Application filed October 28, 1915. Serial No. 58,4429.

to provide a device of this class which will,

act positively and effectually to prevent skidding of the wheels towhich it is applied, when rendered active, and which will not in any wayimpair the resiliency or" the tires or other cushioning devices for thewheels.

Another aim of the invention is to provide novel means for projectingthe anti-skidding spurs of the device into position for engage ment withthe road surface, which means maybe readily actuated by the driver ofthe car by the exertion of foot pressure.

Anoth'er aim of the invention is to so construct and arrange the devicethat the antiskidding spurs will engage the road surface at such anangle as to positively insure against skidding and to more securelyengage and dig into the surface as the tendency to skid increases.

In the accompanying drawings: Figure 1 is a view partly in rearelevation and partly in vertical transverse section illustrating theanti-skid device embodying the present invention. Fig. 2 is a viewpartly in side elevation and partly in front to rear vertical sectionillustrating one of the anti-skid devices. Fig. 3 is a view partly inside clevation and partly in section, illustrating the actuatingmeansfor the device.

In the drawings, the numeral 1 indicates the casing for the rear axle ofan automobile or other vehicle and 2 the rear wheels at the ends of theaxle, the spokes of these wheels being indicated by the numeral 3 andthe pneumatic tires by the numeral 4;. Each of the anti-skid devicesembodying the present invention includes an annular support or caslng,the outer side of which is indicated by the numeral 5, the inner wall bythe nu meral 6, the outer peripheral wall by the numeral 7, and theinner peripheral wall'by the nulneral 8. By reference to Fig. l of thedrawings it will be observed that the outer and inner side walls 5 and 6respectively of the casing are inclined outwardly from the outerperiphery of the casing so that when the casing is disposed against theinner side of the wheel the. inner peripheral wall 8 thereof will belaterally outwardly displaced or oii'sct with relation to the Wall.Stated in other words, the outer peripheral wall 7 of the casing iscylindrical as also the inner peripheral. wall. and the inner side ofthe casing or, in other words, that side which is presented inwardly, isconcave whereas the outwardly presented side is convex The casing ofeach of the anti-skid devices is secured in place upon its respectivewheel preferably by means of U-bolts 9 which are engaged with the spokes3 and have nuts 10 threaded on to the ends of their arms and hearingagainst the concave inner side of the case or, in other words, againstthe wall 6. In order to accommodate and guide the antiskid spurs of thedevice, the outer and inner walls 7 and 8 oi: the casing are "formedrespcctivcly with openings 11 and 12. Each of the anti-skid spursincludes a shank 13 slidably fitted at its outer and inner ends in theopenings 11 and 12 respectively and the outer end of each shank has itsouter side beveled as indicated at 14- so as to provide an enteringpoint or tooth 15; By reference to Fig. 1 of the drawings it will beobserved that due to the peculiar formation of the casing the shanks 13,while radial to the axis of the wheel are so angularly positioned thattheir toothed ends 15 will be prese ted radially outwardly and alsolaterally inwardly. In other words the anti-skid spurs are inclined withrelation to the plane of the wheel to which the casing is secured. 1norder to normally hold the spurs retracted so that their toothed ends 15will be out of position for engagement with the road surface and so thatthe resiliency of the tire -i will not be impaired, a spring 16 isfitted to the shank oi. each spur within the casing and a t its outerend bears against the outer peripheral wall 7 of the casing and at itsinner end against a shoulder 1.7 upon the said shank. A stub spindle 18projects latcrall y inwardly "from the shank of each spur and through aslot 19 in the wall'6 of the ill I the shoe with a 2 9.

and serge w v casing". The spindles "l8 sill-ably the slets 19 in theeet'wai' unclersteecl and the euiei? eiicl of sninfiie supports e Teller20, the peep-use which the inner end Walls of the slots 19 filieugh,iiclesired, this meveinen" y limited by providing any other Suitablemezie for'the purpose. In order m close the sleiis 1Q so as to excletledust niul 1$ frem tlie a cover plate 21 is Cli'i'l'lvi by each 18 andrests sliebly zzgeiiist the enter stood that these sever p. will: thespindles.

Referring in Fig. l 11ml the ing of Fig" it w' l be 1 inally the sp'rinl6 vilalably feel. r skiel spurs retmeted and l1l11"fifi3i@ is pmvicleiwhereby the spurs may outwardly as they eppi-oeie njblie ire-ail emlezeeso es te fihe surface 21.1155 skicldlin The means i'eferrel be aboveinclucle pail 0f lever arms, ineliceled by 'meral 22 each pivoiellymeuneecl 219; one

end as it in a suitable breekei; n p-e11 the axle easing '1, the armsbeing l in flee manner shown in i of iii-e 1: ing and izlie saidlimclzells being lo, substantially miwey between the said casing 1. Fremtheir pivoted ends the lever 22 extend beneath he easinq 1 and havetheir oppesi'te end portions tuitnea downwardly end outwardly at eagleas indicated at Q and secured i0 slice indicated in general by thenumeral 26, the cennection 0f the arms with their reegvective shoesbeing braced by brace members *2?" secureclko lillfi'ifillf sie of theslice and to theportiens 2-5 of the all as. The ees are of arcueae35027111 and 'lie euifier 01 en gaging side ofeecli slice is curveci enthe are of a circle 0i less diameter a circle teaching the inner sidesof the series elf rollers as clearly shown in Fig 33 of di'zuvings, thissurface being incliee'becl specifically by the men rel and. beingprovided 3& the e'utwaflll presented. The lever arms neer theii outerpertie-mi Work in guicles fixeclfiipon theezile 1 e335 springsiil areconnected their lower ends to the slim arms eecl thei: upper e11 to iheatteel' a g: DOlll'lOllS of bracket-s h eably support the arms in positlen with the respec ive elmes Quiz of engagemenl; wi 31 "the rollers B;will now understeed a when the level arms 22 are swung elew'nw 3 againstiii 2ision the sprii surface 28 m. the shoe 25 will be emught iz-iaeeemee'', with {he mile the tellers: beneath his face I e and as theehees ere far lewim'weh Eellere siding; ever kid. see early ,sbe'vm in2; of the draw iIEfiQ to this figure it will be mueli as the engagingfame is curved en an we of e emezt r than circle teaching iii-e111 anannex :1

"wally fill: on is the said sliee eecl be gradimlly iiie've'l ir'ediellyoutn the central p01"- in ange 29, will be servee t0 prevent relm therollers 20 and shee ave position. ll

1n llclue ta the peculeee easing in Which'the seated. and due to thespurs and fihe peculiar testbed ends, tend he skicl like right,

I *iee carried by the left irate the fee spi. lie'ncl wheel Nil mealsurface T the J 36 RENEE )3 V. .11 0.. me were eelmeney 1mg; m? aimclmie(41 bring elwes 26 levee may be gaezment with the rollers 20 into ash0,5? the an; nism ".L Secured =0 I clamp eel s are breekees 33 uponwhich are :iDlVOefLll}? mounizeel levers 34, one

0% eeeli P cie'vlees a fee? levee meeew- "e will new lie described.

e; which extends upwerclly ether arm 05' which, indicated by M 35,extencls forwerclly enrimmed in the respective 1* arm- Ell/0d." 3'1?piveoed to she blie emlm. e ed iwwemlly and are piveemieued as 21$ 38150 e feel, lever 39 4 ll} memieea'l e .450 beneath the floor mach ne,200%. piece of the lever,

we at heing located above the floor and mm pesitien for engagement by"1*"- :lee'z, it will new be apce' to 3 er" the draw- J a that whee lfhefeet lever 39 is swung 'fei'i-valwilly 1e connecting rode 37 will beV661 and Llie angle levers to swing" their arms "s will result in.simulswieging mwement 01f parent by re dewnwem teeeeurii 11%,

,ie 0f rollers 20,

g of lhe angle,

e easing 1 by means of dle projecting and in the projection of spurs 1nthe manner above e):-

a vehiclewheel and having a concave inwarcllytpresented side providedwith radial slots, anti'skid members mounted for radial movement throughthe inner rxpheral Walls oi the casing,

and outer pemeans yieldably holding the members retracted, a spin fromeach of the members and lurking in the respective slots, a rollercarried by each spindle, a shoe movable into and out of cooperativerelation to the said rollers, the said shoe having anarcuate engagingiace describing the are of a circle o1 less diameter than the circledescribed by the series of rollers, the said face of the shoe beingprovided with a flange for preventing relative displacement of therollers and the shoe, and means for moving the shoe into and out ofcooperative relation to the said rollers. In an anti-skid device of theclass described, a casing designed to be secured to a vehicle wheel andhaving a concave inu 'ardly presented side provided with radial slots,anti-skid members mounted for radial movement through the inner andouter peripheral walls of the casing, means yieldably holding themembers retracted, a spin (lle projecting from each of the members andworking in the respective slots, a roller carried by each spindle, ashoe movable into and out of cooperative relation to the said rollers,the said shoe having an arcuate engaging face describing an arc of acircle of less dianieter than the circle described by the series ofrollers.

In testimony whereof I affix my signature.

CHARLES r. SMITH. m

